Integrated tunable green light source on silicon nitride
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arXiv
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| Main Authors: | , , , , , , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866911631192096768 |
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| author | Wang, Gang Yakar, Ozan Ji, Xinru Clementi, Marco Zhou, Ji Lafforgue, Christian Wu, Jiaye Hu, Jianqi Kippenberg, Tobias J. Brès, Camille-Sophie |
| author_facet | Wang, Gang Yakar, Ozan Ji, Xinru Clementi, Marco Zhou, Ji Lafforgue, Christian Wu, Jiaye Hu, Jianqi Kippenberg, Tobias J. Brès, Camille-Sophie |
| contents | Integrated green light sources are essential for telecommunications and quantum applications, while the performance of current on-chip green light generation is still limited in power and tunability. In this work, we demonstrate green light generation in silicon nitride microresonators using photo-induced second-order nonlinearities, achieving up to 3.5 mW green power via second-harmonic generation and densely tunable over a 29 nm range. In addition, we report milliwatt-level all-optical poling (AOP) threshold, allowing for amplifier-free continuous-wave AOP. Furthermore, we demonstrate non-cascaded sum-frequency generation, leveraging the combination of AOP and simultaneous coherent frequency combs generation at 1 $μ$m. Such comb-assisted AOP enables switching of the green light generation over an 11 nm range while maintaining the pump within a single resonance. The combination of such highly efficient photo-induced nonlinearity and multi-wavelength AOP enables the realization of low-threshold, high-power, widely-tunable on-chip green sources. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_13662 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Integrated tunable green light source on silicon nitride Wang, Gang Yakar, Ozan Ji, Xinru Clementi, Marco Zhou, Ji Lafforgue, Christian Wu, Jiaye Hu, Jianqi Kippenberg, Tobias J. Brès, Camille-Sophie Optics Integrated green light sources are essential for telecommunications and quantum applications, while the performance of current on-chip green light generation is still limited in power and tunability. In this work, we demonstrate green light generation in silicon nitride microresonators using photo-induced second-order nonlinearities, achieving up to 3.5 mW green power via second-harmonic generation and densely tunable over a 29 nm range. In addition, we report milliwatt-level all-optical poling (AOP) threshold, allowing for amplifier-free continuous-wave AOP. Furthermore, we demonstrate non-cascaded sum-frequency generation, leveraging the combination of AOP and simultaneous coherent frequency combs generation at 1 $μ$m. Such comb-assisted AOP enables switching of the green light generation over an 11 nm range while maintaining the pump within a single resonance. The combination of such highly efficient photo-induced nonlinearity and multi-wavelength AOP enables the realization of low-threshold, high-power, widely-tunable on-chip green sources. |
| title | Integrated tunable green light source on silicon nitride |
| topic | Optics |
| url | https://arxiv.org/abs/2504.13662 |